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Transverse focusing of spin-polarized photocurrents

Li, Juerong, Gilbertson, AM, Litvinenko, Konstantin, Cohen, LF and Clowes, Steven (2012) Transverse focusing of spin-polarized photocurrents Physical Review B (Condensed Matter and Materials Physics), 85 (4), 045431.

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We measure transverse magnetically focused photocurrent signals in an InSb/InAlSb quantum well device. Using optical spin orientation by modulated circularly polarized light an electron spin-dependent signal is observed due to the spin-orbit interaction. Simulations of the focusing signal are performed using a classical billiard ball model, which includes both spin precession and a spin-dependent electron energy. The simulated data suggest that a signal dependent on the helicity of the incident light is expected for a Rashba parameter α > 0.1 eVÅ and that a splitting of the focusing signal is not expected to be observed in linear polarized photocurrent and purely electrical measurements.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Photonics
Faculty of Engineering and Physical Sciences > Physics
Authors :
Gilbertson, AM
Cohen, LF
Date : 19 January 2012
DOI : 10.1103/PhysRevB.85.045431
Copyright Disclaimer : Copyright 2012 American Physical Society
Depositing User : Symplectic Elements
Date Deposited : 24 Jan 2012 22:22
Last Modified : 06 Jul 2019 05:09

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